Willow Tree
Order of Operations
It's the classic please excuse my dear aunt sally strategy to remembering the order of operations. Young mathematicians practice to develop an understanding of the order of operations. Examples and practice problems include absolute...
Illustrative Mathematics
Box of Clay
What happens to a volume when you scale the dimensions of a rectangular prism? In this problem, a box of clay is increased in each dimension, with the intent to see if learners can generalize the result. The addition of physical models...
Curated OER
Powers and Exponents
In this powers and exponents activity, students read about both, then write expressions as multiplications and solve, rewrite expressions using exponents and solve and express area and volume using exponents and solve.